<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>筛子布局</title>
    <style>
      .wrap {
        width: 300px;
        height: 300px;
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        border-radius: 30px;
        box-shadow: 0 0 10px #000 inset;
      }
      .row {
        display: flex;
        justify-content: space-around;
      }
      .point {
        width: 60px;
        height: 60px;
        background: black;
        border-radius: 30px;
      }
    </style>
  </head>
  <body>
    <div class="wrap">
      <div class="row">
        <div class="point">1</div>
        <div class="point">2</div>
      </div>
      <div class="row">
        <div class="point">3</div>
      </div>
      <div class="row">
        <div class="point">4</div>
        <div class="point">5</div>
      </div>
    </div>
  </body>
</html>
